Polar graph support, phase one

- Polar property for toggling the polar mode
- Example added. Example docs will be added in another patch once all
  of the functionality the example needs has been implemented.
- Only surface graph supports polar so far. Scatter to be added later.

Change-Id: I54d36f764ac1771ac88f73a5f3a2142f2309f6e8
Reviewed-by: Mika Salmela <mika.salmela@digia.com>

1 files changed, 22 insertions, 0 deletions

diff --git a/src/datavisualization/engine/abstract3dcontroller.cpp b/src/datavisualization/engine/abstract3dcontroller.cpp
index 30434dca..e4fd0003 100644
--- a/src/datavisualization/engine/abstract3dcontroller.cpp
+++ b/src/datavisualization/engine/abstract3dcontroller.cpp
@@ -50,6 +50,7 @@ Abstract3DController::Abstract3DController(QRect initialViewport, Q3DScene *scen
     m_isCustomItemDirty(true),
     m_isSeriesVisualsDirty(true),
     m_renderPending(false),
+    m_isPolar(false),
     m_measureFps(false),
     m_numFrames(0),
     m_currentFps(0.0)
@@ -176,6 +177,11 @@ void Abstract3DController::synchDataToRenderer()
 
     m_renderer->updateTheme(m_themeManager->activeTheme());
 
+    if (m_changeTracker.polarChanged) {
+        m_renderer->updatePolar(m_isPolar);
+        m_changeTracker.polarChanged = false;
+    }
+
     if (m_changeTracker.shadowQualityChanged) {
         m_renderer->updateShadowQuality(m_shadowQuality);
         m_changeTracker.shadowQualityChanged = false;
@@ -1521,4 +1527,20 @@ float Abstract3DController::aspectRatio()
     return m_aspectRatio;
 }
 
+void Abstract3DController::setPolar(bool enable)
+{
+    if (enable != m_isPolar) {
+        m_isPolar = enable;
+        m_changeTracker.polarChanged = true;
+        m_isDataDirty = true;
+        emit polarChanged(m_isPolar);
+        emitNeedRender();
+    }
+}
+
+bool Abstract3DController::isPolar() const
+{
+    return m_isPolar;
+}
+
 QT_END_NAMESPACE_DATAVISUALIZATION